S-97595A574 8-32 x 1/4" ASME B18.3 Brass Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from brass construction ensures long-term reliability in harsh industrial environments
• Precise Class 3A thread fit delivers secure fastening with minimal vibration loosening in critical applications
• High tensile strength (50,000 PSI) provides exceptional load-bearing capacity for demanding mechanical assemblies
• Rockwell B55 hardness maintains thread integrity and prevents stripping during repeated installations
• 82° countersink angle with flat head design creates flush surface finishes while distributing clamping force evenly
• Hex drive compatibility (3/32") enables high-torque installation without cam-out issues
• Full threading along 1/4" length ensures maximum grip depth and adjustment flexibility

Professional Applications & Engineering Value

This 8-32 UNC brass flat head screw addresses critical engineering challenges in precision assembly applications. The Class 3A thread fit provides tighter tolerances than standard fasteners, eliminating play in vibration-prone environments while the coarse UNC thread pattern enables rapid installation in production settings. The brass material offers inherent corrosion resistance without additional plating, making it ideal for electrical components, marine hardware, and chemical processing equipment where galvanic corrosion is a concern. The combination of 50,000 PSI tensile strength and Rockwell B55 hardness ensures reliable performance in high-stress applications while maintaining the machinability required for precision adjustments. The flat head profile with 82° countersink provides aerodynamic and aesthetic benefits in automotive, aerospace, and instrumentation panels where protruding fasteners are unacceptable.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread tolerances for precision fit. Features UNC coarse threads with 8-32 thread size and right-hand thread direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Standard 82° countersink angle ensures proper seating in matched components. All dimensions conform to inch system measurements with 1/4" length and 0.327" head diameter.